2217 search results - page 89 / 444 » Rank-aware Query Optimization |
109
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DAWAK
2003
Springer
15 years 7 months ago
2003
Springer
Abstract. Many SQL queries with aggregated subqueries exhibit redundancy (overlap in FROM and WHERE clauses). We propose a method, called the for-loop, to optimize such queries by ...
88
Voted
VLDB
1987
ACM
15 years 6 months ago
1987
ACM
195
Voted
DEBS
2011
ACM
2011
ACM
DejaVu: a complex event processing system for pattern matching over live and historical data streams
14 years 6 months ago
This short paper provides an overview of the DejaVu complex event processing (CEP) system, with an emphasis on its novel architecture and query optimization techniques for correla...
204
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ICDE
2008
IEEE
16 years 4 months ago
2008
IEEE
Applications that monitor functions over rapidly and unpredictably changing data, express their needs as continuous queries. Our focus is on a rich class of queries, expressed as p...
143
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SIGMOD
2004
ACM
16 years 2 months ago
2004
ACM
The prevalent use of XML highlights the need for a generic, flexible access-control mechanism for XML documents that supports efficient and secure query access, without revealing ...